Spring 2005 AOS 572 Exercise Assignments
ANNOUNCEMENTS
Numerical Experiments.
As I mention in the first class, on voluntary bases for students taking the course for credit or auditing can run numerical experiments on a diversity of topics.
With a global shallow water model.
a) Circulation around topographic features, barotropic instability
vortex trajectories etc.
with the fully compressible non-hydrostatic model ZETAC.
b) Circulation over topography in a stratified atmosphere.
c) The evolution of unstable planetary waves
c1) Barotropic instability
c2) Baroclinic instability
d) Atmospheric fronts, convection etc.
If you are interested in running an experiment (at GFDL) please let me know and I or somebody in the group will help you setting up the experiment.
Examples of Numerical Experiments
I just ran this experiment with an isolated mountain in a global shallow water model. The region covers the entire globe in latitude and longitude. There is a zonal jet in both north and south hemispheres. The mountain is located in the middle latitudes of the north hemisphere (55N,50E). The solution spans only 4 days; the frames are shown every hour. Vorticity, in blue, is negative (anticylonic), red is positive (cyclonic). The whole experiment takes a few minutes to run on the GFDL super-computer.
Convection and atmospheric frontal circulation